采用Stöber方法合成SiO₂纳米颗粒，通过Pickering乳液模板法制备含氟两亲纳米颗粒（SiO₂/APTES/HFBA），并对其表面活性进行评价。利用粒径分析仪、傅里叶变换红外光谱仪（FT-IR）和表面张力仪对含氟两亲纳米颗粒的粒径分布、化学组成和界面活性进行分析表征。结果表明，实验合成的SiO₂纳米颗粒粒径分布狭窄，平均粒径为192 nm。制备的含氟两亲纳米颗粒（SiO₂/APTES/HFBA）在质量分数达到0.6%时，其在界面上的吸附达到饱和，此时，表面张力为35.2 mN/m，具有较优异的界面活性。

SiO₂ nanoparticles are synthesized via Stöber method.Then,fluorine-containing amphiphilic nanoparticles (SiO₂/APTES/HFBA) are prepared via Pickering emulsion template and their surface activity is evaluated.The chemical composition,particle size distribution and interfacial activity of SiO₂/APTES/HFBA samples are characterized by Fourier transform infrared spectroscope (FT-IR),particle size analyzer and surface tension meter.The results show that the particle size distribution of the synthesized SiO₂ nanoparticles is narrow,with an average particle size of 192 nm.When the concentration of the prepared fluorine-containing amphiphilic nanoparticles reaches 0.6%,the adsorption on the interface can reach saturation and the surface tension is 35.2 mN·m^-1,showing an excellent interfacial activity.

邢菲(1988-),女,博士研究生,研究方向为纳米材料的制备与应用,s1203268@stu.nepu.edu.cn